Bar in ‘The Grapes' closes - at ‘Crown (5)
I believe the answer is:
estop
'bar' is the definition.
(I've seen this before)
'grapes closes at crown' is the wordplay.
'grapes closes' becomes 'es' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' is a charade indicator (letters next to each other).
'crown' becomes 'top' (synonyms).
'es'+'top'='ESTOP'
'in the' is the link.
Can you help me to learn more?
(Other definitions for estop that I've seen before include "Preclude certain evidence (at law) - bar (archaic)" , "lawyer's bar" , "Hinder, preclude (law)" , "Legally check" , "term in law" .)